On 10/02/2013 03:33:08 PM, Bird, Tim wrote:
; Summary: Kernel module binary compatibility with debug features
; Proposer: Tim Bird, Sony Mobile
== Description ==
Sometimes, the workflow for embedded systems include obtaining kernel
modules from
3rd party vendors or other software teams. In certain situations, it
can be difficult
to re-compile and re-install these 3rd party modules, even though the
kernel on a system
can be re-configured, rebuilt and re-installed.
This feature proposes to isolate the kernel module interface from
changes in certain
kernel debug features, so that turning on those feature will not
create binary incompatibility
with a newly configured and deployed kernel.
You're aware that the upstream kernel guys see the lack of binary
compatability as a feature, not a bug (punishing binary-only modules),
so that not only will this feature probably never go upstream, but
you'll quietly piss off multiple senior kernel developers by suggesting
it and one of them will "coincidentally" rewrite whatever
infrastructure it depends on in an incompatible way within the year?
They haven't got the spare bandwidth to pursue much legal action in
court, but EXPORT_SYMBOL_GPL() is just the tip of the iceberg...
Rob
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